Vane pump with brittle vanes and rough finished housing surface

Details Vane pump with brittle vanes and rough finished housing surface Vane pump with brittle vanes and rough finished housing surface

1987-11-06

1989-01-24

Vrablik, John J.

Rotary expansible chamber devices

Methods

418152, 418178, 418179, 418257, 418261, F04C 18344, F04C 2900

Patent

active

047998679

ABSTRACT:
A vane pump in which an engaging portion in engagement with vanes to restrain the protrusion of the vanes to a given amount is provided on the inner surface of an end wall of a housing, the vanes being made of a material having a relatively high brittleness, the housing having an inner peripheral surface finished into a rough surface so as to restrain the sliding resistance of the vanes resulting from rotation thereof.

REFERENCES:
patent: 141000 (1873-07-01), Gillespie
patent: 1444269 (1923-02-01), Piatt
patent: 2492935 (1949-12-01), McCulloch et al.
patent: 2519557 (1950-08-01), Flanagan
patent: 2672282 (1954-03-01), Novas
patent: 3433166 (1969-03-01), Birkemeier
patent: 3988083 (1976-10-01), Shimizu et al.
patent: 4212603 (1980-07-01), Smolinski
patent: 4334840 (1982-06-01), Teruyama
patent: 4466785 (1984-08-01), Biswas

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